Provided both machines run a more or less similar OS, you can simply bulk copy the whole of the Perl-folder to the new machine. I've done that numerous times. As a matter of fact I have one folder which contains Apache + MySQL + Perl (including mod_perl) and just copy it to a CD or DVD and load it on the other machine. The only "issue" I ever got was that the new machine did not have the same drive-letters and this broke some configurations, but that was easily repaired.

If one can do it with the whole Perl-tree, I see no reason why it would not work with individual modules. You might get some outdated modules in your tree this way, but solving that is as simple as running the "upgrade" command in CPAN or PPM.